Futures Margins requirements

Initial Margin is set by the exchange. This is the amount required to carry a contract past the daily close.

DayTrade Margin is set by AMP broker. This is the amount required to enter into a position per contract on an intraday basis.

These margins are in effect anytime the market is open, except the last 5 minutes of each trading session.
AMP request that you either flatten open positions or meet the exchange required initial margin during this time period.